package com.sky.service.impl;

import com.alibaba.druid.support.spring.stat.annotation.Stat;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;

import java.util.Collections;
import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    SetmealMapper setmealMapper;
    @Autowired
    SetmealDishMapper setmealDishMapper;
    @Autowired
    DishMapper dishMapper;
    /**
     * 新增套餐
     * @param setmealDTO
     */
    @Transactional
    public void saveWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal=new Setmeal();
        //插入套餐基本表信息
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.insert(setmeal);
        //获取添加套餐之后生成的自增id
        Long setmealId = setmeal.getId();

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        for (SetmealDish setmealDish : setmealDishes) {
            setmealDish.setSetmealId(setmealId);
        }
        setmealDishMapper.insertBatch(setmealDishes);
    }

    /**
     * 菜品分页查询
     * @param setmealPageQueryDTo
     * @return
     */
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTo) {
        PageHelper.startPage(setmealPageQueryDTo.getPage(),setmealPageQueryDTo.getPageSize());
        Page<SetmealVO> page=setmealMapper.pageQuery(setmealPageQueryDTo);
        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 批量删除套餐
     * @param ids
     */
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //起售状态中的套餐不能删除
        for(Long id:ids){
            Setmeal setmeal=setmealMapper.getById(id);
            if(setmeal.getStatus()==StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        //删除套餐基本表信息
        setmealMapper.deleteBatch(ids);
        //删除套餐菜品关系表信息
        setmealDishMapper.deleteBatch(ids);
    }

    /**
     * 根据id查询套餐
     * @param id
     * @return
     */
    public SetmealVO getById(Long id) {
        SetmealVO setmealVO=new SetmealVO();
        Setmeal setmeal = setmealMapper.getById(id);
        BeanUtils.copyProperties(setmeal,setmealVO);
        List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }

    /**
     * 修改套餐
     * @param setmealDTO
     */
    @Transactional
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal=new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.update(setmeal);
        setmealDishMapper.deleteBatch(Collections.singletonList(setmeal.getId()));
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if(setmealDishes!=null&&setmealDishes.size()!=0){
            for (SetmealDish setmealDish : setmealDishes) {
                setmealDish.setSetmealId(setmealDTO.getId());
            }
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }

    /**
     * 套餐起售停售
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
        if(status== StatusConstant.ENABLE){
            List<Dish> dishes = dishMapper.getBySetmealId(id);
            dishes.forEach(dish -> {
                if(dish.getStatus()==StatusConstant.DISABLE){
                    throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                }
            });
        }
        Setmeal setmeal=Setmeal.builder()
                .status(status)
                .id(id)
                .build();
        setmealMapper.update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
